scope:

FOREWORD

Addendum b to ASHRAE/ASHE Standard 189.3 includes the following significant changes:

• In Section 3, "Definitions, Abbreviations, and Acronyms," revised definition for "residential health facility" added specialized outpatient facility based on coordination with the Facility Guidelines Institute (FGI)

• In Section 7, "Energy Efficiency," updated Mandatory Provisions language, provided an exception in the On-Site Renewable Energy Systems section, added an exception to Fault Detection and Diagnostics, updated Prescriptive Option language, added new Table 7.4.1.1 addressing Renewable Energy Requirement, and modified Performance Option language and exceptions to Annual Energy Cost and Annual Carbon Dioxide Equivalent (CO₂e)

• In Section 8, "Indoor Environmental Quality (IEQ)," provided an informative note for Section 8.3.1.2, "Outdoor Air Delivery Monitoring"

• In Section 10, "Construction and Plans for Operation," added an exception related to indoor environmental quality

• Additional building types added to align with Table 7.4.1.1 building types; updated the Building Performance Factor for all building types to coordinate with ANSI/ASHRAE/IES Standard 90.1-2019

Note: Future editions of the standard will incorporate the section numbering of ASHRAE Standard 189.1 and the related International Green Construction Code. For example, "Mandatory Provisions" in Section 6 will be titled 6.3 (601.3), "Mandatory Provisions."

Note: In this addendum, changes to the current standard are indicated in the text by underlining (for additions) and (for deletions) unless the instructions specifically mention some other means of indicating the changes.